I’m late, I know. But for any one else dealing with this problem in Premiere in the future, I thought I might suggest the solution.
Just last night I had the same issue. Hours of footage, no audio ref on footage, only timecodes from both.
I researched and found https://www.tentaclesync.com/#download
Apparently they make the hardware need for timecode syncing on set, but they also have software to go along with it. It’s not free though, but they do offer a 14 day trial. One quick trip to my email account later and I was good to go.
I opened the program, drag’n’dropped all my footage and my audio in the same “bin”, and presto. All synced via timecode. Didn’t even have to click any “sync” button first. That’s even better than a one-lock-solution ????
Exported an XML, import in PPro, og voila. A nicely synced timeline. From here I go in and trim audio overflows manually and link footage and audio together per clip. So that part still sucks, but the frustration of the sync proces is out of the equation now. Saved me a couple of hours ☺
Hope it can help some of you having the same issue!